"Better Call Saul" A Prequel AND Sequel?

Right from the start we've always heard that AMC's "Breaking Bad" spin-off series "Better Call Saul" would serve as a prequel to the events portrayed in 'Bad', thus allowing even dead characters from the earlier show to appear.

Yet, fans are also keen to know what happened to the character after he was last seen in the second last episodes awaiting the start of a new life in Nebraska.